Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 07-03-2021 and time 18:26:20 (UTC) in region 5 km NW Massa Martana (PG)

A magnitude ML 2.3 earthquake occured in region: 5 km NW Massa Martana (PG), on

  • 07-03-2021 18:26:20 (UTC)
  • 07-03-2021 19:26:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8210, 12.4960 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Massa Martana PG 5 3770 3770
Giano dell'Umbria PG 7 3846 7616
Todi PG 8 16851 24467
Collazzone PG 10 3473 27940
Gualdo Cattaneo PG 11 6155 34095
Fratta Todina PG 11 1839 35934
Monte Castello di Vibio PG 12 1567 37501
Castel Ritaldi PG 14 3278 40779
Acquasparta TR 15 4778 45557
Montefalco PG 15 5679 51236
Bevagna PG 16 5081 56317
Marsciano PG 16 18902 75219
Montecastrilli TR 19 5022 80241
Deruta PG 19 9669 89910
Avigliano Umbro TR 19 2558 92468
San Venanzo TR 20 2218 94686

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SW of Foligno (57155 inhabitants)
31 Km NW of Terni (111501 inhabitants)
33 Km S of Perugia (166134 inhabitants)
55 Km NE of Viterbo (67173 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
93 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 Km NE of Civitavecchia (52991 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.3 2021-03-07
18:26:20		 42.8207 12.4962 8 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88457611
Reviewed
Rev100 		ML 2.3 2021-03-07
18:26:20		 42.8153 12.4993 7 2021-03-07
18:39:41		 Sala Sismica INGV-Roma 87878451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-07 18:26:20 ± 0.06
Latitude 42.8207 ± 0.0027
Longitude 12.4962 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88457611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 295
Semi-minor axis of confidence ellipse (meter) 246
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 204
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 91
Number of defining phases 91
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.94159
Number of stations at which the event was observed 61
Number of stations from which data was used for origin computation 61
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 60
Type of magnitude ML
Reference to an origin 88457611
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-22 16:22:55

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 57
Type of magnitude ML
Reference to an origin 87878451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-07 18:39:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAMP.HHE. 2021-03-07T18:26:45.38 0.6 undecidable manual S 113 80.8635 50 0.27 44
IV.EL6.EHZ. 2021-03-07T18:26:44.70 0.6 undecidable manual S 41 74.7696 50 1.22 31
IV.GUMA.HHZ. 2021-03-07T18:26:44.00 0.3 undecidable manual S 68 73.2711 50 0.93 53
IV.SMA1.EHZ. 2021-03-07T18:26:43.23 0.6 undecidable manual S 107 71.5728 50 0.6 41
IV.MTRA.EHE. 2021-03-07T18:26:43.33 0.6 undecidable manual S 95 73.6707 50 0.15 45
IV.T1299.HNN. 2021-03-07T18:26:41.90 0.6 undecidable manual S 108 67.2771 50 0.41 43
IV.SRES.HHE. 2021-03-07T18:26:41.20 0.6 undecidable manual S 179 64.7907 50 0.39 44
IV.MMO1.EHZ. 2021-03-07T18:26:41.60 0.6 undecidable manual S 82 68.0763 50 -0.1 46
IV.CSP1.EHZ. 2021-03-07T18:26:41.10 0.6 undecidable manual S 62 64.8906 50 0.25 45
IV.RM33.EHZ. 2021-03-07T18:26:41.93 0.6 undecidable manual S 120 68.0763 50 0.25 45
IV.PF6.EHN. 2021-03-07T18:26:41.45 0.6 undecidable manual S 58 66.6777 50 0.13 46
IV.TB02.DHN.01 2021-03-07T18:26:40.90 0.6 undecidable manual S 353 61.3941 50 0.99 35
IV.MC2.EHZ. 2021-03-07T18:26:39.19 0.3 undecidable manual S 80 57.1983 50 0.39 67
IV.CERT.HNE. 2021-03-07T18:26:38.98 0.6 undecidable manual P 157 104.5176 50 0.7 37
IV.FDMO.HHZ. 2021-03-07T18:26:37.80 0.3 undecidable manual S 63 53.6019 50 -0.05 72
IV.PARC.HHZ. 2021-03-07T18:26:37.35 0.6 undecidable manual P 347 94.1391 50 0.68 38
IV.SACS.HHZ. 2021-03-07T18:26:36.01 0.6 undecidable manual S 274 47.8188 50 -0.28 46
IV.MPAG.EHZ. 2021-03-07T18:26:36.76 0.6 undecidable manual P 13 92.1411 50 0.39 42
IV.NRCA.HHZ. 2021-03-07T18:26:36.80 0.6 undecidable manual S 88 50.3163 50 -0.16 47
IV.TOLF.HHZ. 2021-03-07T18:26:36.72 0.6 undecidable manual P 206 93.24 50 0.19 43
IV.MTCE.HHZ. 2021-03-07T18:26:36.05 0.6 undecidable manual P 167 90.7425 50 -0.1 44
IV.FEMA.HNE. 2021-03-07T18:26:36.10 0.6 undecidable manual S 71 47.619 50 -0.14 48
IV.MML1.HNE. 2021-03-07T18:26:36.83 0.6 undecidable manual S 50 50.4162 50 -0.16 47
IV.LNSS.HHZ. 2021-03-07T18:26:36.90 0.3 undecidable manual S 118 50.5161 50 -0.11 72
IV.MURB.HHZ. 2021-03-07T18:26:36.45 0.6 undecidable manual S 3 49.1175 50 -0.18 47
IT.MTCL.HGZ. 2021-03-07T18:26:35.30 0.6 undecidable manual S 65 45.2214 50 -0.29 47
IV.BADI.EHE. 2021-03-07T18:26:35.20 0.6 undecidable manual P 345 79.0653 50 0.85 36
IV.ARVD.HHE. 2021-03-07T18:26:35.82 0.6 undecidable manual P 25 83.3499 50 0.82 36
IV.BARO.HNN. 2021-03-07T18:26:34.09 0.6 undecidable manual P 210 73.1712 50 0.65 40
IV.ATCC.HNN. 2021-03-07T18:26:34.47 0.6 undecidable manual S 16 42.0246 50 -0.29 47
IV.CAMP.HHE. 2021-03-07T18:26:34.34 0.6 undecidable manual P 113 80.8635 50 -0.28 44
IV.ATMC.EHN. 2021-03-07T18:26:34.54 0.6 undecidable manual P 341 73.6707 50 1.02 34
IV.FRON.EHZ. 2021-03-07T18:26:34.54 0.6 undecidable manual P 13 79.5648 50 0.12 45
IV.MF5.EHZ. 2021-03-07T18:26:34.93 0.6 undecidable manual P 76 80.4639 50 0.37 43
IV.FIAM.HNN. 2021-03-07T18:26:34.13 0.6 undecidable manual P 140 79.5648 50 -0.29 44
IV.CING.HNZ. 2021-03-07T18:26:34.95 0.6 undecidable manual P 42 83.6496 50 -0.1 45
IV.PIEI.HHZ. 2021-03-07T18:26:34.68 0.6 undecidable manual P 2 79.365 50 0.29 44
IV.ATPC.HNN. 2021-03-07T18:26:33.91 0.6 undecidable manual P 358 73.2711 50 0.45 43
IV.ATBU.HNN. 2021-03-07T18:26:33.77 0.6 undecidable manual P 3 72.7716 50 0.4 43
IV.ARRO.EHZ. 2021-03-07T18:26:33.00 0.6 undecidable manual S 141 34.6431 102 0.4 46
IV.EL6.EHZ. 2021-03-07T18:26:33.50 0.3 undecidable manual P 41 74.7696 50 -0.18 67
TV.SF14.HHN. 2021-03-07T18:26:33.29 0.6 undecidable manual P 265 72.1722 50 0.01 47
IV.SMA1.EHZ. 2021-03-07T18:26:33.16 0.6 undecidable manual P 107 71.5728 50 -0.03 47
IV.GUMA.HHZ. 2021-03-07T18:26:33.59 0.3 undecidable manual P 68 73.2711 50 0.15 68
IV.CESI.HHZ. 2021-03-07T18:26:33.22 0.3 undecidable manual S 58 38.9277 50 -0.71 62
IV.MTRA.EHE. 2021-03-07T18:26:33.21 0.3 undecidable manual P 95 73.6707 50 -0.3 66
IV.ATSC.EHE. 2021-03-07T18:26:32.66 0.6 undecidable manual P 13 68.6757 50 -0.09 46
TV.SF04.EHZ. 2021-03-07T18:26:32.88 0.6 undecidable manual P 272 67.9764 50 0.24 45
IV.TB03.DHZ. 2021-03-07T18:26:32.45 0.6 undecidable manual P 354 64.7907 50 0.31 45
IV.SSFR.HHN. 2021-03-07T18:26:32.90 0.6 undecidable manual P 19 72.0723 50 -0.38 43
IV.RM33.EHZ. 2021-03-07T18:26:32.28 0.3 undecidable manual P 120 68.0763 50 -0.36 66
IV.ATPI.EHZ. 2021-03-07T18:26:32.94 0.6 undecidable manual P 354 70.2741 50 -0.06 47
IV.GAVE.EHZ. 2021-03-07T18:26:32.47 0.6 undecidable manual S 114 35.4423 102 -0.4 46
IV.PF6.EHN. 2021-03-07T18:26:32.16 0.1 undecidable manual P 58 66.6777 50 -0.28 89
TV.SF03.EHN. 2021-03-07T18:26:32.71 0.6 undecidable manual P 269 65.9895 50 0.38 44
IV.MCIV.CHE. 2021-03-07T18:26:32.37 0.6 undecidable manual P 266 66.8775 50 -0.1 46
IV.T1299.HNN. 2021-03-07T18:26:32.42 0.3 undecidable manual P 108 67.2771 50 -0.11 69
IV.MMO1.EHZ. 2021-03-07T18:26:32.36 0.1 undecidable manual P 82 68.0763 50 -0.3 89
IV.CAFI.HNN. 2021-03-07T18:26:32.88 0.6 undecidable manual P 323 70.8735 50 -0.2 45
IV.SRES.HHE. 2021-03-07T18:26:32.10 0.6 undecidable manual P 179 64.7907 50 -0.04 47
IV.TB01.DHZ. 2021-03-07T18:26:31.58 0.6 undecidable manual P 356 62.3931 50 -0.2 46
IV.TB02.DHN.01 2021-03-07T18:26:31.85 0.6 undecidable manual P 353 61.3941 50 0.23 46
IV.CSP1.EHZ. 2021-03-07T18:26:31.97 0.3 undecidable manual P 62 64.8906 50 -0.2 69
IV.MGAB.HHZ. 2021-03-07T18:26:31.82 0.6 undecidable manual S 288 32.8449 103 -0.18 49
IV.ATFO.HHZ. 2021-03-07T18:26:31.40 0.6 undecidable manual P 6 60.8946 50 -0.14 47
IV.ATMI.HHZ. 2021-03-07T18:26:31.41 0.6 undecidable manual P 342 59.8956 50 0.02 48
IV.FOSV.EHZ. 2021-03-07T18:26:30.66 0.6 undecidable manual P 22 56.7987 50 -0.26 46
IV.MC2.EHZ. 2021-03-07T18:26:30.76 0.3 undecidable manual P 80 57.1983 50 -0.22 69
IV.ATLO.HNE. 2021-03-07T18:26:30.75 0.3 undecidable manual P 353 55.3002 50 0.06 72
IV.FDMO.HHZ. 2021-03-07T18:26:30.11 0.3 undecidable manual P 63 53.6019 50 -0.32 68
IV.MURB.HHZ. 2021-03-07T18:26:29.38 0.3 undecidable manual P 3 49.1175 50 -0.35 68
IV.LNSS.HHZ. 2021-03-07T18:26:29.62 0.3 undecidable manual P 118 50.5161 50 -0.33 68
IV.MML1.HNE. 2021-03-07T18:26:29.57 0.3 undecidable manual P 50 50.4162 50 -0.36 68
IT.FOPC.HGE. 2021-03-07T18:26:29.25 0.6 undecidable manual S 45 23.5542 108 0.36 48
IV.SACS.HHZ. 2021-03-07T18:26:29.23 0.3 undecidable manual P 274 47.8188 50 -0.3 69
IV.ATVA.EHE. 2021-03-07T18:26:29.98 0.3 undecidable manual P 341 53.6019 50 -0.44 66
IV.NRCA.HHZ. 2021-03-07T18:26:29.54 0.3 undecidable manual P 88 50.3163 50 -0.37 68
IV.CESX.HHZ. 2021-03-07T18:26:29.00 0.6 undecidable manual S 163 24.6531 107 -0.25 49
IV.FEMA.HNE. 2021-03-07T18:26:29.36 0.3 undecidable manual P 71 47.619 50 -0.14 72
IT.MTCL.HGZ. 2021-03-07T18:26:28.99 0.6 undecidable manual P 65 45.2214 50 -0.13 48
IV.ATCC.HNN. 2021-03-07T18:26:28.21 0.3 undecidable manual P 16 42.0246 50 -0.43 68
IV.CESI.HHZ. 2021-03-07T18:26:27.86 0.1 positive manual P 58 38.9277 50 -0.31 94
IV.ARRO.EHZ. 2021-03-07T18:26:27.57 0.3 undecidable manual P 141 34.6431 102 0.17 73
IV.GAVE.EHZ. 2021-03-07T18:26:27.26 0.3 undecidable manual P 114 35.4423 102 -0.29 71
IV.MGAB.HHZ. 2021-03-07T18:26:26.68 0.3 undecidable manual P 288 32.8449 103 -0.37 70
IV.CESX.HHZ. 2021-03-07T18:26:25.40 0.3 undecidable manual P 163 24.6531 107 -0.07 76
IT.FOPC.HGE. 2021-03-07T18:26:25.31 0.3 undecidable manual P 45 23.5542 108 0.05 76
IV.MOMA.HHZ. 2021-03-07T18:26:23.80 0.3 undecidable manual S 107 6.2937 140 0.08 78
IT.GNU.HGZ. 2021-03-07T18:26:23.84 0.6 undecidable manual S 107 6.2937 140 0.12 52
IV.MOMA.HHZ. 2021-03-07T18:26:22.54 0.1 undecidable manual P 107 6.2937 140 0.26 100
IT.GNU.HGZ. 2021-03-07T18:26:22.56 0.3 undecidable manual P 107 6.2937 140 0.29 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHE. ML:2.3 0.001167 0.52 AML other m 2021-03-07T18:26:30.59
IV.CESX.HHN. ML:2.1 0.0007838532999999999 0.2176 AML other m 2021-03-07T18:26:32.03
IV.MGAB.HNN. ML:2.0 0.0004750548 0.2176 AML other m 2021-03-07T18:26:33.18
IV.MGAB.HHE. ML:2.1 0.0005735 0.36 AML other m 2021-03-07T18:26:33.43
IV.GAVE.EHN. ML:2.6 0.00165 0.28 AML other m 2021-03-07T18:26:33.29
IV.GAVE.HNN. ML:2.1 0.00049451225 0.2688 AML other m 2021-03-07T18:26:33.57
IV.MGAB.HNE. ML:2.0 0.0005347663 0.3584 AML other m 2021-03-07T18:26:33.61
IV.GAVE.EHE. ML:2.7 0.001875 0.32 AML other m 2021-03-07T18:26:33.76
IV.GAVE.HNE. ML:2.6 0.0018243025 0.256 AML other m 2021-03-07T18:26:33.75
IV.MGAB.HHN. ML:2.1 0.0005522925000000001 0.3968 AML other m 2021-03-07T18:26:33.85
IV.CESI.HHN. ML:2.3 0.000818 0.3 AML other m 2021-03-07T18:26:34.12
IV.ARRO.EHE. ML:2.0 0.000451 0.76 AML other m 2021-03-07T18:26:34.46
IV.ARRO.EHN. ML:2.0 0.0004665 0.2 AML other m 2021-03-07T18:26:35.31
IV.CESI.HNE. ML:2.2 0.0006264358 0.3712 AML other m 2021-03-07T18:26:35.76
IV.CESI.HHE. ML:2.2 0.000643 0.36 AML other m 2021-03-07T18:26:35.76
IV.CESI.HNN. ML:2.4 0.0009238886499999999 0.2816 AML other m 2021-03-07T18:26:36.10
IV.NRCA.HHE. ML:2.4 0.000639 0.18 AML other m 2021-03-07T18:26:37.35
IV.NRCA.HNE. ML:2.4 0.000626 0.18 AML other m 2021-03-07T18:26:37.35
IV.SACS.HHE. ML:1.8 0.00017099999999999998 0.26 AML other m 2021-03-07T18:26:37.43
IV.SACS.HHN. ML:1.9 0.000207 0.28 AML other m 2021-03-07T18:26:37.84
IV.SACS.HNN. ML:1.9 0.0002226206 0.3072 AML other m 2021-03-07T18:26:37.85
IV.FDMO.HHN. ML:2.1 0.00027367170000000004 1.3856 AML other m 2021-03-07T18:26:37.22
IV.LNSS.HHN. ML:2.5 0.0009420732 0.256 AML other m 2021-03-07T18:26:38.63
IV.LNSS.HNN. ML:2.5 0.0008589955 0.2688 AML other m 2021-03-07T18:26:38.63
IV.MURB.HHE. ML:2.6 0.00107789045 0.3584 AML other m 2021-03-07T18:26:39.19
IV.MURB.HNE. ML:2.6 0.0010437698499999998 0.3584 AML other m 2021-03-07T18:26:39.20
IV.SACS.HNE. ML:1.8 0.0001737963 0.2432 AML other m 2021-03-07T18:26:39.53
IV.FDMO.HHE. ML:2.2 0.000389 1.66 AML other m 2021-03-07T18:26:40.16
IV.NRCA.HNN. ML:2.2 0.00041754539999999993 0.1536 AML other m 2021-03-07T18:26:40.28
IV.NRCA.HHN. ML:2.2 0.00040250755 0.1408 AML other m 2021-03-07T18:26:40.28
IV.MURB.HHN. ML:2.5 0.0009145 0.34 AML other m 2021-03-07T18:26:40.61
IV.MURB.HNN. ML:2.4 0.0007765 0.36 AML other m 2021-03-07T18:26:40.62
IV.LNSS.HHE. ML:2.5 0.000811 1.46 AML other m 2021-03-07T18:26:42.78
IV.LNSS.HNE. ML:2.5 0.0008259999999999999 1.46 AML other m 2021-03-07T18:26:42.78
IV.CSP1.EHN. ML:2.6 0.0007455000000000001 0.24 AML other m 2021-03-07T18:26:43.13
TV.SF04.EHN. ML:2.2 0.0002838748 0.2944 AML other m 2021-03-07T18:26:43.42
TV.SF04.EHE. ML:2.2 0.00030685965 0.4224 AML other m 2021-03-07T18:26:44.32
IV.RM33.EHN. ML:2.2 0.00025193125 0.2176 AML other m 2021-03-07T18:26:44.49
IV.GUMA.HHE. ML:2.7 0.0007934999999999999 0.3 AML other m 2021-03-07T18:26:44.50
IV.GUMA.HNE. ML:2.8 0.0009080000000000001 0.34 AML other m 2021-03-07T18:26:44.68
IV.GUMA.HHN. ML:2.7 0.0007905 0.3 AML other m 2021-03-07T18:26:44.70
IV.SMA1.EHE. ML:2.8 0.0010614824999999998 0.32 AML other m 2021-03-07T18:26:44.71
IV.SMA1.EHN. ML:2.7 0.0008950000000000001 0.4 AML other m 2021-03-07T18:26:44.80
IV.CSP1.EHE. ML:2.6 0.000796 0.36 AML other m 2021-03-07T18:26:45.22
IV.ATMI.HHN. ML:2.4 0.00046967495000000006 0.3328 AML other m 2021-03-07T18:26:45.70
IV.ATMI.HHE. ML:2.5 0.0006234999999999999 0.38 AML other m 2021-03-07T18:26:45.86
IV.RM33.HNN. ML:2.2 0.00030199999999999997 0.34 AML other m 2021-03-07T18:26:47.42
IV.GUMA.HNN. ML:2.6 0.0006000482499999999 0.3328 AML other m 2021-03-07T18:26:47.37
IV.MF5.EHN. ML:2.4 0.0003755 0.42 AML other m 2021-03-07T18:26:47.43
IV.PIEI.HHN. ML:1.8 0.00008740000000000001 0.36 AML other m 2021-03-07T18:26:47.99
IV.EL6.EHE. ML:2.4 0.0003375 1.64 AML other m 2021-03-07T18:26:48.15
IV.MF5.EHE. ML:2.4 0.000367 1.42 AML other m 2021-03-07T18:26:50.97
IV.EL6.EHN. ML:2.2 0.000263 1.62 AML other m 2021-03-07T18:26:50.10
IV.MTCE.HHE. ML:1.9 0.000101147365 0.4224 AML other m 2021-03-07T18:26:51.26
IV.TOLF.HHE. ML:1.9 0.000090919105 0.32 AML other m 2021-03-07T18:26:51.89
IV.MTCE.HHN. ML:2.0 0.000113970195 0.3968 AML other m 2021-03-07T18:26:51.99
IV.PARC.HHN. ML:2.1 0.00013797065000000001 0.4992 AML other m 2021-03-07T18:26:52.36
IV.PIEI.HHE. ML:1.9 0.0001185 1.56 AML other m 2021-03-07T18:26:52.84
IV.TOLF.HHN. ML:1.9 0.00007760073499999999 0.2432 AML other m 2021-03-07T18:26:53.12
IV.PARC.HHE. ML:2.1 0.000130745775 0.4224 AML other m 2021-03-07T18:26:54.69
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download